June weather forecast
Merritt Island, FL

The first month of the summer, June, is still a warm month in Merritt Island, Florida, with an average temperature fluctuating between 76.6°F (24.8°C) and 85.1°F (29.5°C).

Temperature

As Merritt Island steps into June, the average high-temperature is measured at a still moderately hot 85.1°F (29.5°C), displaying minor differences from May's 81.5°F (27.5°C). Merritt Island logs an average low-temperature of 76.6°F (24.8°C) during the nights of June, subtly lower than its daytime highs.

Heat index

The heat index in June is calculated to be a torrid 96.8°F (36°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In June, the average relative humidity is 78%.

Rainfall

In June, the rain falls for 20.8 days. Throughout June, 3.7" (94mm) of precipitation is accumulated. Throughout the year, there are 190.9 rainfall days, and 29.37" (746mm) of precipitation is accumulated.

Daylight

The month with the longest days is June, with an average of 13h and 54min of daylight.
On the first day of June, sunrise is at 6:25 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 8:23 pm EDT.

Sunshine

In Merritt Island, the average sunshine in June is 10.8h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 7 during June translates into the following directions:
Fend off overexposure. Sun protection is vital. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.